207 
The situations where it is found are heaths. 
The perfect insect appears at the end of August and in 
September. 
The caterpillar feeds on the birch (?) and the heath, 
(Calluna vulgaris). 
LARENTIA DID YMARIA. 
TWIN-SPOT CARPET. 
Plate XXVIII. Figure 6. 
This insect measures an inch or a little over in expanse. 
Male : fore wings dark greyish-brown with a slight 
tinge of reddish, crossed with several darker lines, a dark 
greyish-brown band in the middle, another at the inner 
corner. Third line whitish and jagged, with two brownish 
black blots. Hind wings greyish-brown, darker broadly 
on the outer margin. 
Localities for this very common species are York, Brigh¬ 
ton, Humberstone, Faversham, Barnstaple, Exeter. 
The perfect insect appears in June and July. 
The caterpillar is pale green, with a narrow white line 
on the sides. 
The date of the appearance of the caterpillar is in April. 
It feeds on the chervil (Choerophyllum aureum). 
